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https://issues.apache.org/jira/browse/SPARK-25180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16588001#comment-16588001
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Steve Loughran commented on SPARK-25180:
----------------------------------------
code snippet was some trivial CSV => ORC with both src and dest on s3a URLs
{code}
filteredCSV.write.
partitionBy("year", "month").
mode(SaveMode.Append).format("orc").save(orcData.toString)
{code}
> Spark standalone failure in Utils.doFetchFile() if nslookup of local hostname
> fails
> -----------------------------------------------------------------------------------
>
> Key: SPARK-25180
> URL: https://issues.apache.org/jira/browse/SPARK-25180
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.3.0
> Environment: mac laptop running on a corporate guest wifi, presumably
> a wifi with odd DNS settings.
> Reporter: Steve Loughran
> Priority: Minor
>
> trying to save work on spark standalone can fail if netty RPC cannot
> determine the hostname. While that's a valid failure on a real cluster, in
> standalone falling back to localhost rather than inferred "hw13176.lan" value
> may be the better option.
> note also, the abort* call failed; NPE.
>
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